Specification Brand : Aexit BulletPoint1 : Shank Diameter: Round Shank Size:40 x 14mm/1.57" x 0.55"(L*D); Overall Length: 83mm/ 3.3" BulletPoint2 : Material: Metal; Weight: 249g BulletPoint3 : Package Content: 2 x Hinge Boring Bits; Boring Diameter: 45mm/ 1.8" BulletPoint4 : Product Name: Hinge Boring Bit; Main Color: Silver Tone , Blue BulletPoint5 : Suitable for: Wood Cutting; Hexagon Shank Size: 30 x 9mm/1.2" x 0.35"(L*D) Color : Silver CompatibleMaterial1 : Glass CompatibleMaterial2 : Marble ItemName : Aexit Carpenter Woodworking Hole Saws & Accessories 45mm Cutting Diameter Drilling Carbide Tip Hinge Boring Hole Saw Sets Bit 2pcs ItemTypeKeyword : hole-saw-sets Manufacturer : Aexit Material : metal Material1 : plastic Material2 : Metal ModelNumber : modle PartNumber : f190412ae044209 ProductDescription : Precision ground for heavy use and easily resharpened, they can enlarge existing holes with ease and can bore any arc of a circle. Carbide tip is specially designed to through hole cleanly in end grain and thin stock, great for boring concealed hinges and door clocks. It is far safer and more accurate to use this drill bit in a drill press. Attention: The Hinge Boring Bit is used on bench drill or drill machine. Hand drill or electric drill is not recommended. ProductSiteLaunchDate : 2018-09-29T06:55:46.329Z Style : Round SurfaceRecommendation : Wood UnitCount : 1